We’ve looked into this, but here’s one of the problems: applicants have a lot of anxiety in the process. A lot of that anxiety gets projected onto the interview, since it’s the most human point of contact with the office. I know this because I’ve talked to admits who thought they interviewed poorly and then I go and read the interview and the interviewer loved them. Another concern is that applicants might be worried that we take their review into consideration in their application and thus not respond honestly.
We’ve been trying to think of solutions (maybe a blind, anonymized response? but how to correct for anxiety?) but it’s reeeally tough.